AMT12 alternative.

[Skyliner33]

Battery Master - Battery to Battery Balancer

Flat batteries are everyone"s worst nightmare, but with the Battery Master Advanced Battery Balancer they should be a thing of the past. You can now easily charge your engine battery from mains hook-up with the Battery Master. Our specially designed, fully waterproof, resin bonded product will...

www.sunshinesolar.co.uk

Seems to do the same job. Just quite a bit cheaper.

 

[Salty Spuds]

Same price

Ablemail AMT12-2 12v 2amp trickle charger - battery maintainer - battery saver

Ablemail AMT12-2 12v 2amp trickle charger - battery maintainer - battery saver - AMT12-2 Trickle Charger has been designed to keep a vehicle’s starter battery charged and protected from damage during prolonged periods of inactivity: while in storage for e

www.simplysplitcharge.co.uk

 

[Absolut5]

Battery Master - Battery to Battery Balancer

Flat batteries are everyone"s worst nightmare, but with the Battery Master Advanced Battery Balancer they should be a thing of the past. You can now easily charge your engine battery from mains hook-up with the Battery Master. Our specially designed, fully waterproof, resin bonded product will...

www.sunshinesolar.co.uk

Seems to do the same job. Just quite a bit cheaper.

We use these in all our installs now, installed one today

 

[t0mb0]

Last time I looked the Battery Master ones couldn’t be used with a lithium leisure battery.

 

[Absolut5]

Last time I looked the Battery Master ones couldn’t be used with a lithium leisure battery.

They work with lithium, and had it confimed by them

 

[Dellmassive]

Battery Master - Battery to Battery Balancer

Flat batteries are everyone"s worst nightmare, but with the Battery Master Advanced Battery Balancer they should be a thing of the past. You can now easily charge your engine battery from mains hook-up with the Battery Master. Our specially designed, fully waterproof, resin bonded product will...

www.sunshinesolar.co.uk

Seems to do the same job. Just quite a bit cheaper.

that is 100% NOT THE SAME AS A AMT12/12/5 !!!!

thats just a dumb box with a resistor and diode inside, plus a ground wire for the LED.

it has no smarts or chips,

its not programmable,

its has no charge profiles.

its literally just a few components and way over priced.

it works by bleeding voltage from the higher voltage LB, through a current limiting resistor, and via a diode to stop any back flow.


ask them why there box is potted, with no idea whats inside?

with the Ablemail you pay for a proper IC based trickle charger with charge profiles and BT + App.

 

[Dellmassive]

look at this . . . another so called charger.

i bough it to open up.

be carful what you spend your cash on !!!


...

Thread '[Guide] Battery Maintainer (for Starter battery) -- How I Done It --'

25 Nov 2020

[Guide] Battery Maintainer (for Starter battery) -- How I Done It --

Right so its that time of year again . . . . . . . . Winter & (Lockdown 2020)




The van might be layed up not being used, which will lead to a flat battery in around 3 weeks.

The cold weather doesn't help the battery's either.






This Thread is about using "what you have" to "back charge" the starter battery...

lets look at some options. . . . . . . .

1# Connect a 240v/EHU charger to the starter battery and leave it connected, that's fine if you have a drive way etc, have a look for the...

• Dellmassive

• 

 

[Dellmassive]

@Absolut5 - do us a favour.

can you crack the potted case off one and show us whats inside.

if not, im going to buy one myself and open it up.

im 100% sure its just a few components. and not a proper charger.

 

[t0mb0]

It might be the most cost effective solution for some though? Not everyone is into the last degree of monitoring, tweaking and component-counting, some people just want something that does the job they need to do and forget about it. For some people paying £42 or whatever to solve a problem with a starter going dead is better than paying £70 (plus another £84 if you want bluetooth configuration/monitoring) for something that's theoretically 'better' in terms of components etc. Obviously if you want or need to play with different profiles etc, then pay up for the more advanced version. These are all trickle chargers, none of them are true multi-stage chargers.

I actually have a votronic DC-DC which effectively has one of their cheap reverse chargers effectively built in. It's been running in the background for six years or so seamlessly and I've never had to think about my starter over that time - it just works. I wish more manufacturers would do this actually, adding ever more little boxes everywhere is tedious, it seems a no-brainer to add the functionality to an existing DC-DC box. It's the same with lithium batteries and then having to buy a separate shunt for accurate SoC measurement - it's nuts that with all the logic built into lithium most of them can't even measure their own SoC accurately and you have to tinker around adding separate shunts.

 

[Drive Wayne]

I'm in love with my Bluetooth AMT12-2B.
I hate the overused term 'piece of kit', but this genuinely is a cracking piece of kit!

 

[moomin-j]

I'm in love with my Bluetooth AMT12-2B.
I hate the overused term 'piece of kit', but this genuinely is a cracking piece of kit!

@Drive Wayne
Is the new Abemail AMT12-2B a quick swop out for the old non bluetooth 1 - same size / connections / ports etc
Basically: pull 1 wire out & shove it into the new module type of plug & play?
A no faffing about install.

 

[Drive Wayne]

@Drive Wayne
Is the new Abemail AMT12-2B a quick swop out for the old non bluetooth 1 - same size / connections / ports etc
Basically: pull 1 wire out & shove it into the new module type of plug & play?
A no faffing about install.

Yes, you won't need the newly supplied rubbery spade connectors. Real easy swap.

 

[Skyliner33]

@Drive Wayne
Is the new Abemail AMT12-2B a quick swop out for the old non bluetooth 1 - same size / connections / ports etc
Basically: pull 1 wire out & shove it into the new module type of plug & play?
A no faffing about install.

Yes, you won't need the newly supplied rubbery spade connectors. Real easy swap.

Do they not look like this?

If so the connections are different.



to the ones on this:

 

[Drive Wayne]

The AMT12-2B is the same as the original. Exactly!

 

[sparkzer]

@Absolut5 - do us a favour.

can you crack the potted case off one and show us whats inside.

if not, im going to buy one myself and open it up.

im 100% sure its just a few components. and not a proper charger.

Could probably do some non distructive testing by sticking a bench supply on the input and winding the voltage up from 0V comparing the input voltage to the output. Im guessing the output will be the same voltage as the input less the forward voltage of a diode (typ 0.7V). If it has some brains it likely wont pass anything until it gets to rated voltage

 

[Skyliner33]

The AMT12-2B is the same as the original. Exactly!

Strange. I might call in to Abelmail HQ next week if I get the chance and ask a few questions. That one called the 'PRO" you need to download an app to progran it so Im assuming it must be Bluetooth as well.

Its a shame as the Pro version is a much neater unit.

 

[Jonesy68]

I have just ordered the BT model from Wildebus.

Wildebus